diff --git a/Gemfile b/Gemfile
index 3e53292..8575c59 100644
--- a/Gemfile
+++ b/Gemfile
@@ -27,6 +27,6 @@ end
 gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 # Performance-booster for watching directories on Windows
-gem "wdm", "~> 0.1.0" if Gem.win_platform?
+gem "wdm", ">= 0.1.0", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 gem "webrick", "~> 1.7"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4e733b0..c6f21f7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -270,7 +270,6 @@ GEM
     unf_ext (0.0.9.1)
     unf_ext (0.0.9.1-x64-mingw-ucrt)
     unicode-display_width (1.8.0)
-    wdm (0.1.1)
     webrick (1.8.1)
 
 PLATFORMS
@@ -284,7 +283,7 @@ DEPENDENCIES
   jekyll-toc
   minima (~> 2.0)
   tzinfo-data
-  wdm (~> 0.1.0)
+  wdm (>= 0.1.0)
   webrick (~> 1.7)
 
 BUNDLED WITH